Mayo Clinic Research Confirms Critical Role of Masks in Preventing COVID-19 Infection
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MayoClinic News Network - Please note: Mayo Clinic is sharing pre-published data on masking efficacy to help highlight the importance of masking and social
Mayo Clinic Research Confirms Critical Role of #Masks in Preventing #COVID19 Infection: https://t.co/DSn7HKwPwB https://t.co/DSn7HKwPwB